J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Trailer Moficiation

Trailer dimensions were measured to the hull at the centerline of each support.
Looking at your pictures, I would be concerned how the center beams were notched to lower the height of where the keel sits.
Take a look at the pictures of my trailer. Those center supports are not notched.
granted, the load should be carried on the pads as well as the keel, but still - not sure about the notches and the reduced strength in that critical area.
6 support pads vs 8 on my trailer, probably OK for short haul. Years ago in winter, my boat used to sit on 6 jack stands + the keel. But back to your trailer, I would have concern about the notched cross beams

Thanks russ, the notches are a source of concern for me too, though maybe I can explain a little. I didn't cut all the way through the beams, the keel bed is welded to the bottom 90 degree portion and three inches of the center portion of the beam are welded to the sides of the channel. I'll include pictures. I'm figuring the downward force or flex generated by the boat weight will be offset by the sides of the keel channel. That being said, I was planning to weld some notched plate steel at each of the connections to further reenforce the area.

I long ago quit being an engineer so I wouldn't qualify myself to comment. There are plenty of others that could offer better guidance.
I always thought that the majority of the weight of the boat is carried by sitting on the keel and that the pads are there to keep the boat from falling over. if that's the case, you'll want that area of the trailer to be pretty strong.

Almost Done

Alright folks, she is high and dry and my welds held. Thanks so much to russ for the specs and everyone else for their help, it really came in handy. She seems pretty steady with 7 stands instead of 9, we weren't setting any speed records pulling her back but she seemed to settle right in. All told we spent about 1,400, so it was a real budget build and it will definitely save money in the form of storage fees in the years to come.